A facile synthesis of hierarchical α-MnO2 nanofibers on 3D-graphene foam for supercapacitor application

• Published in: Materials letters Vol. 119; pp. 135 - 139
• Main Authors: Patil, Umakant M., Sohn, Ji Soo, Kulkarni, Sachin B., Park, Hyung Goo, Jung, Youngmo, Gurav, Kishor V., Kim, Jae Hun, Jun, Seong Chan
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.03.2014
• Subjects: 3D-graphene foam; Nanofibers; Supercapacitor; α-MnO2; Supercapacitor; α-MnO2; Nanofibers; 3D-graphene foam
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2013.12.105

Prominence of current work mainly conveys synthesis of α-MnO2 nanofibers on 3D-graphene foam (GF) by solution growth (SG) method and its proficient influence in electrochemical supercapacitors’ performance. The α-MnO2 nanofibers are synthesized on graphene surface by using MnSO4 and ammonium persulfate as an oxidant. The results show formation of aggregated bundles (size about 15–30nm) of 1D α-MnO2 nanofibers on the graphene surface. In supercapacitor, the unique nanofibrous morphology of MnO2 on 3D GF electrode exhibits higher specific capacitance (670Fg−1) than on the conventional current collector (CC) electrode (440Fg−1). •Synthesis of α-MnO2 nanofibers (~5–10nm) by a facile solution growth (SG) method.•Decoration of 1D MnO2 nanofibers on 3D-graphene foam (GF).•Supercapacitive study of MnO2/GF and conventional MnO2/CC electrodes.•Maximum capacitance (670Fg−1) is found for α-MnO2/GF electrode.